Niggli, Urs and Niggli, Idda. 2007. Esquisse Grammaticale du Ninkare au Burkina Faso. Ouagadougou: Summer Institute of Linguistics.
@book{sinnemakizeromarking-Niggli2007,
address = {Ouagadougou},
author = {Niggli, Urs and Niggli, Idda},
publisher = {Summer Institute of Linguistics},
title = {Esquisse Grammaticale du Ninkare au Burkina Faso},
year = {2007}
}